Pump-shaft-casing coupling



G. W. PRICE PUMP SHAFT CASING COUPLING Filed Feb. 11, 1924 2 Sheets-Sheetv l Illll lill/11701' v Oct.- 20, 1925.

G. W. PRICE PUMP SHAFT CASINQ coUPLING' 2 Sheets-*Sheet 2 Filed Feb. 11, 19,24

I'HH [Imam-1r fof/5e u nele: If

vshaft casing coupling.

Patented Oct. 20, 1925.

yUNITED STA ras PATENT..carica,

GOMER W. PRICE, or *SANv rnANcIscd'oALIronNrA, lnssicrNon To PnIcn'rMr AND ENGINE COMPANY, or SAN FRANcIsco, oAnIror'tN'A.

IUiuinsinuar-cAsINa4 countries.y

Application fue@ February 11,1924. `Serin' No. 691,993.

To all whom t may concern: 7

Be it known that I, GOMER W.v PRICE, a citizen of the United States, residing inthe city and county of San Francisco, and State of California, have invented a new and'usei ful Improvement in a Pump-Shaft-Casing Coupling, of which the following is a specif ication. y Y

My invention relates to 'improvements in well pump construction .wherein sections of a shaft casingare arranged to be independently subjected to tension and are provided with bearings arranged to give flexibility of the casing relative to a drive shaft enclosed therein. i f

The primary object of my invention is to provide an improved construction for well pumps.

Another object is vto provide an improved means forindependentlyY subjecting the several sections of a pump shaft casing to tension whereby an increased tension may be created in each section.

A further object is to provide a 'construction affording flexibility to the shaft casing relative to the shaft.y

A still further object is to provide animproved means for maintaining alignment of the shaft and preventing whipping thereof when in operation.

Another object is'to provide an improved construction facilitating the construction and assembling of the pump.

I accomplish these and other objectsy by means of the device disclosed'in thedrawings forming a part of the vpresent specifica tion wherein like'characters of reference are used to designatesimilar parts throughout said specification and drawings, and in which: y

Fig. 1 and 1 'is a broken side elevation of a vpump and casings, parts being. broken away and' shown yin section to disclose'the application of myimproved construction. f.

Fig. 2 is a vertical section ofa'portion' of the several f' casings and their connecting means; l'

Fig. 3 is an enlarged sectional lview of a Referring to the drawings the numeral1 is used to designate in general a well pump of the rotary typel mounted within a: well casingv 2 and'provided with the usualdischarge Ycasing 3 and shaft 4 extending from the pump to the top of the Well, s ad'shaft being-1pieviddfwah the.y usual pluueyf' c i i whereby the pump may :be driven.-4 The shaft 4 is enclosed withinv a casing 7 asfin commonpractice. y .a-

In installations ofthe character disclosed, much diiiiculty is encountered .in keeping the shaftin true alignment Vand preventing whipping i during( operation of the-pump. In a former application,r Serial blo-,471,115.75 filed May 21, 1921, I disclosedfone manner in which 1 these difficulties may `be overcome namely 'by subjecting the discharge casingl to tension'andthe shaft casing to compression whereby the two may beltrussed `against each other to -form a rigid structure.. V@However, in some cases it-isfound that the constructionA mentioned is ytoo rigid and must be modified in order to `mee-t peculiar' conditions such as wells vwhich `havenotabe'en drilled pe'rfectlytrue.Vv Under'such condi tions'a slight flexibility must be v'afforded to the v'discharge andV shaft'ca'sings Ito permit Vtrue alignment ,of the shaft, and-other l.provision made for preventing the whippingjof Atheshaft. when in operation; I accomplish this in the following manner.

.- yThe discharge casing Bfislformedy from a V.plurality 'of sections of 1a desired length .the .ends of which are threaded Vinto couplings vor flange -connections 8 arranged to be connectedf by means of lbolts 9,01'y otherisuitable se-V curing-means. `One`of the flange connections ,upon each discharge casing section is providedgwith centrally disposed collarsll' connected tothe flange by-webs 12 preferably formedintegral therewith and arranged to `receive the shaft' casing 7.. v

, The shaft; casing 7 composed of a plurality of sections having threaded ends, each section beingslidably engaged byon'e of the collars 11.r SleeveslB -arefthreaded onto the adjacent endsV of `adj acent casings sections, to 'connect the sameesaid sleeves-beingy arranged tto permit 'thefendsof' the'fad-j acent sections to rbe advanced into g contacting lrelationiwithin fthe-sleeve; ff'Ihe shaftf'casing sections'areso arranged with respect to the* discharge casing sections' f `and v theirconnecting flanges ythat when-assembledthe sleeves 13 will'be immediately above thel -collars'll so that by z'idvancing'g;the sleeve slightly vfarther onto the lower jcasing section the sleeve will bear against said collar :and a `further lturning-of the sleeve will 'createya tension 1n thesectlon.

In this mannerany desired tension may/be independently created in eachy of: the shaftkv casing sections, each section being assembled and rsubjected to tension independently of cured therein to receive they shaft 1a.y Ehe bearings 14 are spacedefrom the ends of the sections and hence fromthe collar 111 which' together with the Webrsnlf and the flange 8 ormsfa spideraording a'exiblesupport fort-he shaft ca singto center the same With-inthe discharge-casing The bearings may be secured in any desi-redy manner but I, prefer to accomplish this by forming each bearings-1 block with anannulan recess 16' whichvv islilled Withsoft metal throughnertur@ .17' ir' the Side @ty the easing aftepthefbearings have beenr po sitio-ned;` A'

The loWe-rmost' casing sections are'- con nectedE to the pump and' the pump lowered into the Well,V "sucoessivex casing sections f beingo'onnecteduntilthe pump-has been 10W- eredA to vthe .desired depth. As successive sectionsare added, the sleeves 13 arevti'ghtened against thecollarsV 1l to createlthe'desired stressin I'the casing members, this stressbeingl regulated' t-oalloT lthe' casings torbefbowed to conform to any irregularities in the-.Well as the`pu1np-andf` cas-ing is loweredj thereintm rlhevbendingI off the casing ijs/,imparted to a2 lesser Y degree to the ishaiftffcasingfby virtue of the rigidlymoun-t ed spiders. 'In this connection," however, it isimportant tonote-tha-t noibearing isprrovidedy for the shaft immediatelyv'ad-jacent Itoy the spider, but that a# plurality off bearings-areprovided at'points spaced aconsiderable .distendel from"v l'said spidenv rFhis vare Vrangemerlrt 'causes mostjot the! bending. in

the-shaf-t-casinggtooccur at the ends off the sections Where no bea-ring is present, 'such Vbending permitting the.y shaftoasing 7" to conformy to.` thel discharge? casing Vand the Welll Without impart-ing similarldisplacementI ofI the shaft' as .the absence 'of a bearing near the point k ojfbendingaffords suf- 'icient flenibgili-ty` ofrthe.; casing relative to the shaft -to prevent any material distortion vot lthe shaft; underordinary circumstain-ms,` r11h/us'-t-he-bendingoithe 'discharge casing .to con-forin-V to irregailari-ties.` in= the AWell-v--illg cause amore. grad-ual bend-ing of lthe shaft vcas-ing: so vthati" aA portion. of! 'the irregularity 'of the welll iscoinpensated for iby--fdisplacing'the shaft casing relative to the centerofl the discharge 'casing talong :the portion'at which the! curvature is greatest,

"yvhich in thecase of'tlie discharge casing "1s 'at the middle portion. oi. any `particular 'section As above statedthefshaflt casing is causedto be bent-to the greatest degree at the ends ofthefsectionsso that the casing is displaced aniallyfrom theshaftat the points of maximum. curvature andf in? this sembled in their proper relation as the cas,-

ingmembers are made-'in standardflen-gths such as will bring the.`r spidersfand' sleeiiesfin the desired; rela-tion sos that only,y a. slight turning of each sleeve 13 Will independen'tlf., createithe desired stresses in .thel corresponel inglcasing sections. i1 i Having thus 'described-my invention what I clain j asnew-and desire-L to securerby Let: ters Patentis.: 1. In'aVWell pump, thefcombination. with a drive shaft, of a casing formed from. a pluralityofpj sections; 'sleeves connecting the ends of adj acen-t' sections; and means v enr gaging said sleeves When said sleeves. are tightened onto one: of` the said'adjacent sections- 'whereby said section. may be. subjectedtoftension independently of the other 'seotions;

2. In a Well pump,v thefcombination With a drive-shaft, of a shaft casing Jformed from a plurality of sections.; sleeves. Connecting the ends of adjacent sections;- and spiders rigidly mountedf adjacent the sleeveslto be engaged: thereby whereby vsaid sleeves may be tightened thereaga-inst tosubject each of the sections to tension.

13.- VIgn a Well pump, the combinationl With adrfive'A shaft, oli a shafft-casing formed from a plurality of seetionshavingthreadedendsg sleevesengaging said threadedfendsto connect adjacent sections; af vspider rigidly mounted adj acent:VVK each` sleeve.; a collafl formed uponl said spider toslidably engage the sha-ft casing, said..- .collar` beingarranged Whereby each sleeve may be tightened, to subjectfthe corresponding casing'asect-ion to tension. f f A 4. In a: Well pump, the combinationr'with a drive .sha-it, "ofV ai sha-ft; casing-J enclosing said driueashaft, said casing being; formed .from a: plurality of sect-ions; yspiders rigidlyv Ito beSengagedfby-the sleeve adjacentfthereto 5. In a Well pump, the combination with a drive shaft and discharge casing formed from a plurality of sections, of flanges connecting the ends of sections forming said` discharge casing; a spider formed integral With one of the flanges upon each section; a shaft casing formed from a plurality .of sections to enclose the shaft; sleeves connecting adjacent ends of the shaft casing sections, each sleeve being arranged to engage one of the spiders to subject one of the shaft casing sections to tension. f

6. In a Well pump, the combination with a drive shaft and discharge casing formed from a plurality of sections, of flanges connecting the ends of sections forming said gage one of the spiders to subject one of the shaft casing sections to tension; and a plurality of shaft bearings mounted Within each casing section, said bearing being spaced away from the spiders to give flexibility of the casing relative to the shaft.

In Witness whereof I hereunto set my signature.

GOMER W. PRICE. 

